Abstract
Agency for Toxic Substances and Disease Registry conducted a study to evaluate body burden levels of volatile organic compounds (VOCs) among residents of highly industrialized Calcasieu Parish, LA, USA, in 2002. Blood VOC levels in a representative sample of participants in Calcasieu Parish were compared with a similar group of participants in the less-industrialized Lafayette Parish. Participants' ages ranged from 15 to 91 years, 46% were men, and 89% were Caucasian. VOC levels in these two populations were also compared at the national levels. Solid-phase microextraction coupled with gas chromatography mass spectrometry was used to measure levels of 30 VOCs in blood samples collected from 283 self-described non-smoking study participants. Of the 30 VOCs, 6 had quantifiable levels in at least 25% of the blood samples analyzed. The frequency of detection was >95% for benzene and m-/p-xylene, >60% for 1,4-dichlorbenzene and toluene, 27% for ethylbenzene, and 39% for styrene. Calcasieu and Lafayette Parish participants had similar distributions for six VOCs in key percentiles and geometric means. When compared with a representative sampling of the 1999-2000 US general population, no significant differences were found between the parish data and the US general population.
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